AeroShell Oil W 15W-50

Standards & approvals

• SAE J1899

  Aircraft piston engine oil, ashless dispersant type

  SAE standard for mineral aircraft piston engine oils with ashless dispersants.

• Pratt & Whitney : Service Bulletin 1183-S

  Pratt & Whitney Service Bulletin 1183-S

  The Pratt & Whitney service bulletin listing the oils approved for its own gas turbines.

• MHS-24A

  Continental MHS-24A — piston aircraft engine oil specification

  The Continental Motors specification for oils used in Continental piston aircraft engines.

• Continental SIL 99-2

  Continental SIL 99-2, service information letter on lubricants

  Continental Motors service information letter listing the sealants, lubricants and adhesives it authorizes for Continental piston engines.

Specifications

Brand

Shell

Range

AeroShell

Category

Aviation piston engine oils

Viscosity

SAE 15W-50

Manufacturer code

001G0143

Availability

On request

Typical characteristics

Manufacturer's description

Semi-synthetic lubricating oil for aircraft piston engines. AeroShell Oil W 15W-50 is a unique blend of high quality mineral oil and over 50% synthetic hydrocarbon base stocks, plus the AeroShell Oil W ashless dispersant additive system. This semi-synthetic blend offers high performance in a wide variety of applications and conditions. The synthetic base stock performance provides for better cold temperature pumping and protection than single grade oils. In addition, the blend of synthetic and high quality mineral base stocks provide high temperature performance superior to that of other fully approved aircraft piston engine oils. The mineral base stocks help disperse lead by-products of combustion, thereby keeping engines free of "grey paint" or lead sludge that can be a problem with some fully synthetic oils. The anti-wear additive system in AeroShell Oil W 15W-50 provides outstanding wear protection for critical camshafts, lifters and other high wear components. The anti-corrosion additive package in AeroShell Oil W 15W-50 helps protect low usage engines and engines in high humidity climates against rust and corrosion of critical engine parts such as camshafts and lifters. AeroShell Oil W 15W-50 provides superior anti-corrosion protection for all types of certified aircraft piston engines. When used with proper maintenance procedures, the product provides maximum protection and improves the likelihood that aircraft engines will reach TBO. In addition, this product provides outstanding high temperature oxidation protection for hot running engines. It is designed to keep engines cleaner with less sludge and varnish build-up in critical ring belt and other areas.

Applications

• AeroShell Oil W 15W-50 is intended for use in certified four- stroke cycle aircraft piston engines. AeroShell Oil W 15W-50 is superior to single grade oils in almost every application. It offers easier starting, better lubrication after start-up, reduced wear, reduced corrosion and rusting, and improved cleanliness with oil pressures and temperatures equal to that of single grade SAE 50 oils at fully warmed up conditions.
• The anti-corrosion additive system is designed to prevent rust or corrosion in all types of aircraft piston engines. In comparative testing of camshaft rusting under high humidity conditions, AeroShell Oil W 15W-50 was almost entirely rust free while other camshafts conditioned on other oils showed sometimes heavy rusting on cam lobes and bearing surfaces.
• These results indicate that AeroShell Oil W 15W-50 can provide maximum anti-corrosion protection for aircraft piston engines, when combined with proper maintenance practices and proper operating conditions.
• Whilst future production will conform to Shell's specification, Because of the improved flow characteristics of AeroShell Oil W 15W-50, operators may observe slightly lower oil temperatures in some aircraft. On larger aircraft, the oil cooler flap will normally compensate for this change. However, in small aircraft, oil temperature could be reduced slightly. Operators should always check the oil temperature to ensure that they are in the range specified by the manufacturer. Most manufacturers recommend cruising oil temperatures between 82 to 93 0 C (180 to 200 0 F). Oil temperatures significantly below this range can result in excessive water and fuel contamination in the crankcase.
• Because of the improved flow characteristics of AeroShell Oil W 15W-50, operators may observe slightly lower oil temperatures in some aircraft. On larger aircraft, the oil cooler flap will normally compensate for this change. However, in small aircraft, oil temperature could be reduced slightly. Operators should always check the oil temperature to ensure that they are in the range specified by the manufacturer. Most manufacturers recommend cruising oil temperatures between 82 to 93 0 C (180 to 200 0 F). Oil temperatures significantly below this range can result in excessive water and fuel contamination in the crankcase

Performance & benefits

• Provides excellent rust and corrosion protection for aircraft engines.
• Promotes engine cleanliness, fights wear, offers excellent anti-foam properties.
• Helps reduce oil consumption by up to 50% and provides superior oil flow at low temperatures.
• Functions as an all season oil, no seasonal changes needed.
• Reduces fuel consumption by up to 5% over single grades.
• AeroShell Oil W 15W-50 is not recommended for use in automotive engines. For automotive engines converted for use in aircraft, the specific engine manufacturer or the conversion agency should be consulted for proper oil recommendation.
• Compatible with other approved aircraft piston engine oils
• Provides superior high temperature oxidation stability
• AeroShell Oil W 15W-50 was developed in co-operation with Textron Lycoming and Continental Motors and conforms to their specifications 301F and MHS-24A respectively. This oil is also approved under Military Specification MIL-L-22851 which is now obsolete and has been replaced by the SAE J1899 specification. AeroShell Oil W 15W-50 is also approved for use in all Pratt & Whitney radial aircraft engines
• In addition AeroShell Oil W 15W-50 meets the provisions of Lycoming Service Bulletin 446C and 471, plus Service Instruction 1409A and meets the American FAA Airworthiness Directive 80-04-03 R2 p.1b which specifies special anti-wear requirements for certain engine models